Grain-drier



UNITED STATES PATENT EEICE.

J. H. PATTEE AND E. S. CLEVELAND, OF GALVA, ILLINOIS.

GRAIN-DRIER.

Specification forming part of Letters Patent No. 51,348, dated December5, 1865.

To all whom it may concern:

Be it known that we, J. H. PATTEE and E. S. CLEVELAND, of Galva, in thecounty of Henry and State of Illinois, have invented a new and usefulImprovement in Grain-Driers; and we do hereby declare thatthe followingis a full, clear, and exact description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- Figure lis an elevation of a longitudinal section taken on theline z, Fig. 2, of a grain-drier made after our invention. Fig. 2 is acrosssection taken on the line x of Fig. 1. Fig. 3 is a plan view of ahorizontal section taken on the line y of Fig. 1. Fig. 4 is a view ofthe rear of the kiln.

Similar letters of reference indicate like parts.

This improvement belongs to that class of grain-driers which use arevolving cylinder', through which the grain passes. The cylinder inthis invention is open at each end, and is inclosed within aheating-chamber, and it is inclined so as to cause the grain to be movedthrough it by gravity. The dust and dirt and other foreign matter ofless size than the grain are discharged through perforations made in thesides of the cylinder near its inner end, while Jthe grain is dischargedfrom the open end of the cylinder. More than one cylinder may be used inthe same heating-chamber, although only one cylinder is exhibited inthis example.

A designates a heating chamber or kiln, which has a furnace, K, and achimney, J.

B is a grain-drying cylinder, whose shaft E is suitably supported in theend walls of the kiln, being adjustably supported at that end which isthe lowest by means of a lever, c, which carries the lower end of theshaft, so that the cylinder can be raised or lowered according to thestage of the work and according to the retardation or accelerationdesired to be given to the passage of the grain through it. The shaft Eat that end of the kiln moves in a vertical slot, which is covered inall positions of the lever c by a plate, b, through which the shaftpasses, and which plate therefore moves with the shaft, being longenough to cover the slot in all the changes of the lever.

The cylinder may be fed with grain by means of a hopper, c, or by asuitable pipe.

The shaft is supported within the cylinder by spiders a, which alsoserve to sustain strips or ribs F, four or more in number, extendingthroughout the cylinder for its whole length, and placed next to itsinner circumference. Their office is to lift the grain and as theyascend deliver it in showers over their' edges toward the center of thecylinder, thereby maintaining a constant agitation and overturning ofthe mass of grain.

rfhe lower part of the cylinder is perforated throughout its entirecircumference with fine holes, intended to pass the dirt and otherforeign matter of less bulk than a kernel of grain.

D is a receiving hopper or trough, which is placed beneath thedischarging end of the cylinder, being wide enough also to extendbeneath its perforated parts. That portion of the trough'which reachespast the end of the cylinder is extended to the end wall of the kiln,and it is divided from that portion which is beneath the perforations,so as to keep the grain separate from the dirt and other mattersdelivered from the cylinder. Each division is continued to the end ofthe trough, so that the grain and dirt maybe discharged into differentreceptacles.

K is a furnace placed in one corner of the kiln. A pipe, I, proceedingfrom it, is carried to and fro through the kiln, so as to distributeheat by radiation throughout the kiln. The

4pipe may be made to traverse the kiln several times before it is led tothe chimney J.

I-I is an air-chamber located over the furnace. A fan-blower, G, isplaced at its mouth to force a constant supply of air into the body ofthe kiln, and since the air must pass through the hot-air chamber H, itwill. become heated before it reaches the inner end of said chamber. Thehot air from the chamber H may, if de. sired, be conducted by a pipeinto the discharging end of the cylinder, or it may be merely dischargedinto the open kiln, relying upon the natural pressure of the atmosphereto cause currents of sufficient energy to pass up through the cylinder.The air, after passing through the cylinder, will be discharged at itsfrontend, outside of the kiln, laden with dust and moisture from thegrain.

Rotary motion is to be given to the cylinder B, and the same power whichdrives it can be flue I, all arranged t0 operate as and for the made todrive the fan. purposes specified.

We claim as new and desire to secure by Let- J. H. PATTEE. ters Patent-E. S. CLEVELAND.

The combination of the inclined and ribbed Witnessesz cylinder B F,adjusting-lever c, sliding plate N. PIERCE, b, fan G, hot-air chamber H,furnace K, and N. KELSEY.

